Bearing



W. J. PALMER.

BEARING.

APPLICATION FILED NOV. 24. l9l9.

Patented July '27, 1920.

' 2 SHEETS-SHEET I.

WWW/sow WtIPalmer W. .l. PALMER.

BEARING- APPLICATION FILED NOV- 24, I919.

Patented July 27, 1920.

2 SHEETS-SHEET 2- WI]. Pal-mer g v UNITED STATES PATENT OFFICE.- A

WILLIAM JOHN PALMER, OF N ORTI-DVILKESBORO, NORTH CAROLINA.

BEARING.

T 0 all whom, it may concern:

' Be it known that I, IVILLIAM J. PALMER, a citizen of the UnitedStates, residing at Northwilkesboro, in the county of Wilkes and Stateof North Carolina, have invented new anduseful Improvements in Bearings,of which the following is a specification.

This invention has reference to grinding mills, and more particularly tomills used for grinding corn and other grain inwhlch the grain issubject to a grinding action between two stones one of which beingrevoluble and the other stationary. V

In this class of mills the bearings for the revoluble mill stone notinfrequently permit of such movement of the said stone as to allow theburs on the face thereof to be brought into excessive frictionalengagement with the bur face of the co-acting mill stone, and as aresult the usefulness of the stones is materially impaired.

It may therefore be considered the object of the present invention toprovide means, in the nature of a bearing which permits of the properadjustment with respect to the space between the bur or grinding facesof the mill stones and which will positively prevent such faces beingbrought into frictional contacting engagement.

A further object of the invention is to produce a bearing for theoperating shaft of a grist mill which will prevent or limit.

the movement of the mill stones with respect to each other and whichshall be of an eX-,

tremely simple construction so that the same may be attached to anyordinary grist mill.

The foregoing objects, and others which will appear as the nature of theinvention is better understood may be accomplished by a construction,combination and operative arrangement of parts such as is illustrated bythe drawings.

In the drawings:

Figure 1 is a side elevationof a grist mill provided with theimprovement.

Fig. 2 is a plan view thereof.

Fig. 3 is a sectional view approximately on the line 33 of Fig. 2.

Fig. 4 is a perspective view of the frame for the shaft illustrating theapplication of the improvement.

Fig. 5 is a detail enlarged perspective view of the improvement attachedto the shaft, parts being broken away and parts being in section.

Specification of Letters Patent.

I" Patented July 27,1920.

Referring now to thedrawings'in detail, the numeral 1 designates a gristmill of the ordinary construction, the same comprising two hollowsections 2 and In the section 2- is the non-rotatable mill stone 4,

while in the section 3 is the rotatable mill stone 5. The shaft for therotatablemill stone 5 is indicated by the nu1neral6, and the same isprovided with the usual screw 7 that passes through the elongatedcentral opening in the mill stone 4 and provides a conveyer for thegrain from the hopper to between the mill stones. The mill stones 4 and5 have their confronting faces burred in the usual manner.

The shaft 6, in the present instance is mounted in bearings 8 and 9provided upon the opposite ends of a substantially rectangular frame 10that is suitably supported to one side of the mill casing and on theshaft 9, approximately centrally of .the frame 10 is the pulley wheel11. The frame 10 has its outer side provided with an extending portion12 having a lateral portion on the outer end thereof which is in thenature of a head 13, and this head is provided with a threaded openingreceiving therein a screw 14 operated by a hand wheel 15. This screw hasits inner end loosely connected with or binding against a cupshapedmember 16 that provides one of the elements of arace-way forantifrictional balls 17. The other element of the race-way, indicated bythe numeral 18 finds a bearing in the end of the shaft 6.

On its opposite side the frame 10 is provided with an enlargement 19through which the shaft 6 passes. On the shaft 6, and contacting withthe inner face of the enlargement is a cup-shaped member 20, and in thiscup-shaped member are anti-frictional balls 21. These balls arecontacted by a disk member 22 that is forced in engagement therewith bya spring 23 that surrounds the shaft 6. On the shaft 6 is a collar 24.This shaft is held adjustable on the shaft through the medium of abinding element in'the nature of a bolt 25. The spring justed, and byadjusting the collar 24 on the shaft 6 it will be likewise apparent thatthe tension of the spring 23 may be adjusted.

It is thought, from the foregoing description, when taken in connectionwith the drawings, the simplicity of the construction and theadvantagesthereof will be apparent without further detailed description.

Havingthus described the invention, what is claimed as new, is a H Incombination with a grist mill having a stationary grinding stone, -arevoluble grinding stone, a shaft for the latter, means for moving theshaftlongitudinally, a frame on which the shaft is j ournaled, and meansfor revolving the shaft; of ab'earing for holding the shaft againstaccidental longitudinal movement to prevent the confrontmg faces of themill stones bemg brought into excessive frlctlonal engagement, saidbearing comprising a cup member loosely mounted on the shaft and havingits closet face contacting with one of the sides of the Y frame,anti-frictional elements 1n said cupshaped member, a disk member looseon the shaft received in the cup-shaped member and contacting With theanti-frictional ele- In testimony whereof I afiix my signature.

' W LLIAM JOHN PALMER: e

